A new method for tilted radiation using frequency selective reflectors

Abstract

We propose a new beam control method using frequency selective side reflectors (FSRs) with no help of the conventional array of multiple antennas. To control radiation directions on an H plane, we need only one feeding dipole antenna with a pair of the FSRs placed on both sides of the dipole antenna. Each FSR consists of equal-length rectangular copper patches. But, in order to obtain different reflection phase from each FSR, the lengths of the patches on each FSR are different from one another. By changing reflection behavior of each FSR, we can derive constructive interference between a direct wave from the dipole and the reflected waves from the FRS and a ground plane. Consequently, we can direct our antenna beam in any target direction with relatively high gain in a wide frequency range.